Setup virtual env for appengine

mkappenginevenv.sh

#!/bin/bash
# 
# Build a virtual environment suitable for running appengine. 
# This uses virtualenvwrapper to make the virtual environment
# and modifies the postactivate/postdeactivate scripts to make
# the appengine code happy.
#
# Usage:
#   $ curl -s https://raw.github.com/gist/2628491 | bash
#
#
# Install steps:
# 1) Checks for virtualenvwrapper and install if needed.
# 2) Activates virtualenvwrapper and creates $WORKON_HOME
# 3) Makes 'appengine' virtual environment
# 4) Modifies postactivate scripts
# 5) Downloads and extracts google appengine source
# 6) pip installs a few extra packages
# 
# Ubuntu Install Help
# 1) First Install python2.5, python-setuptools and curl
# 2) sudo add-apt-repository ppa:fkrull/deadsnakes
# 3) sudo apt-get update
# 4) sudo apt-get install curl python-setuptools python2.5

PLATFORM=`uname -s`

if [[ $PLATFORM -eq "Linux" ]]
then
    # Check if python2.5 installed and install other prereqs
    # Ubuntu no longer has python2.5 in a main repository.
    which python2.5
    if [ ! $? == 0 ]
    then
        sudo add-apt-repository ppa:fkrull/deadsnakes
        sudo apt-get update
        sudo apt-get install curl python-setuptools python2.5-dev libssl-dev libbluetooth-dev
    fi
    
    which python2.7
    if [ ! $? == 0 ]
    then
        sudo add-apt-repository ppa:fkrull/deadsnakes
        sudo apt-get update
        sudo apt-get install python2.7 python2.7-dev
    fi
    # check for individual packages in case they already had python2.5
    # just in case
    if [ ! -e /usr/bin/curl ]
    then
        sudo apt-get install curl
    fi
    if [ ! -e /usr/bin/easy_install ]
    then
        sudo apt-get install python-setuptools
    fi
    # check for ssl
    if [ ! -e /usr/include/openssl/ssl.h ]
    then
        sudo apt-get install libssl-dev
    fi
    # check for libbluetooth-dev
    if [ ! -e /usr/include/bluetooth/bluetooth.h ]
    then
        sudo apt-get install libbluetooth-dev
    fi
fi

LATEST_VERSION=`curl -s http://appengine.google.com/api/updatecheck | awk '$1 ~/release/ {print $2};' | sed s/\"//g`

# Modify me as new versions are released.
APPENGINE_VERSION=google_appengine_$LATEST_VERSION.zip


which virtualenvwrapper.sh
VWNOTFOUND=$?

if (( $VWNOTFOUND == 1 ))
then
	echo 'Installing virtualenvwrapper...'
        sudo easy_install virtualenvwrapper
fi

if [[ ! $WORKON_HOME ]]
then
        export WORKON_HOME=$HOME/envs
fi

# make sure we are not dealing with a customize path
unset PYTHONPATH

mkdir -p $WORKON_HOME
source `which virtualenvwrapper.sh`

cd $WORKON_HOME

if [[ -e appengine ]] 
then
     echo "Deleting existing appengine ENV"
     rm -rf appengine
fi

mkvirtualenv --no-site-packages --distribute --python=python2.7 appengine

if [[ ! $VIRTUAL_ENV ]]
then
     echo "Problem running mkvirtualenv!"
     exit 1
fi

# Don't download the file over again.
if [ ! -e $APPENGINE_VERSION ]
then
    curl -O http://googleappengine.googlecode.com/files/$APPENGINE_VERSION
fi

echo "Extracting Google App Engine source..."
unzip -q $APPENGINE_VERSION -d $VIRTUAL_ENV

if [ ! $? == 0 ]
then
    echo "Problem unzipping file $APPENGINE_VERISON"
    echo "Please delete it and try again!"
    exit $?
fi
# Create a pth file for App Engine source
echo "$VIRTUAL_ENV/google_appengine" > $VIRTUAL_ENV/lib/python2.7/site-packages/gae.pth

# Link scripts
cd $VIRTUAL_ENV/bin
ln -s $VIRTUAL_ENV/google_appengine/*.py .

# link os.pyc to make appengine happy
REALPREFIX=`python2.7 -c "import sys;print sys.prefix"`
cd $VIRTUAL_ENV/lib/python2.7
echo "Linking os.pyc to $REALPREFIX/lib/python2.7/os.pyc"
rm -rf os.pyc
ln -s $REALPREFIX/lib/python2.7/os.pyc


# SSL needs to be installed with sudo!! lame!
echo "Installing ssl with sudo:"
sudo $VIRTUAL_ENV/bin/pip install -q ssl
echo "Fixing perms"
sudo chown -R `whoami` $VIRTUAL_ENV

# uninstall webob as it conflicts with the bundled one in app engine.
echo "Uninstalling webob ..."
pip uninstall -q -y webob

echo "You are ready to roll. Edit .bashrc as needed and run 'workon appengine'"

if (( $VWNOTFOUND == 1 ))
then
        echo "Virtualenvwrapper has been installed."
        echo "Please add the following to your .bashrc file:"
        echo ' export WORKON_HOME=$HOME/envs'
        echo ' source `which virtualenvwrapper.sh`'
fi